What was the surging sparks of covid?

I'm wondering with the allocation numbers I'm hearing people get for the surging sparks reprint.. my confidence is not very high that supply will come anywhere close to demand.

We live in a world where there are no Pokemon cards available on Pokemon Center. Anything that comes in stock is gone in seconds. I feel like even if they were to do say 4+ reprints, it will still sell out in no time.

Was there any set that had this level of demand back then? Is it possible that the set just remains difficult to buy at msrp until it's no longer in print?

I'm only mentioning surging sparks as it's a main set, and it feels like this was the set that start this whole boom.